Harrington Hoists and Cranes TCS Hoist - Manual (Page 18)

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3) Inject a small quantity (approximately 20 drops) of turbine oil (see Section 6.0 ) into the hoist’s inlet port
4) Plug the inlet port
3.12 Preoperational Checks and Trial Operation
3.12.1

Check for the availability of required operating air pressure of between 60 psi to
90 psi at the hoist's inlet port before trying to operate the hoist.
3.12.2

Verify that the load chain is not twisted or tangled and that the bottom hook is not
capsized prior to operating the hoist. Correct all chain irregularities before conducting the first hoist
operation. See
Figures 3-6 and 3-7 .
Figure 3-6 Twist in Load Chain
Figure 3-7 Capsized Hook and Chain